The minimum slope for a pvc plumbing drain line is 1/4" per foot (some jurisdictions wil allow 1/8th"). What is the maximum slope allowed?
You can go straight up. Can you explain the question.
I remember there was an ideal slope. Anything other than that was bad. Too low, nothing drains. Too much, the liquid leaves behind the solids.
Good question, all I could find was this:
**Slope. **The horizontal combination waste and vent pipe shall have a maximum slope of one-half unit vertical in 12 units horizontal (4-percent slope).
The “no” zone is anything between: 1/2" per foot and a 45 degree angle. 45 degrees to vertical is considered vertical and is okeedoekee.
Thanks Charles - that’s what I was looking for. I found a drain line right at 1/2" per foot. Where did you find that reference?
I also know the max to be 1/2" per foot (until you get to 45 degree or more) but I don’t have a referance